CN217758670U - Reusable water and soil pressure testing device - Google Patents
Reusable water and soil pressure testing device Download PDFInfo
- Publication number
- CN217758670U CN217758670U CN202221937902.4U CN202221937902U CN217758670U CN 217758670 U CN217758670 U CN 217758670U CN 202221937902 U CN202221937902 U CN 202221937902U CN 217758670 U CN217758670 U CN 217758670U
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- China
- Prior art keywords
- pressure sensor
- soil
- soil pressure
- shaft tube
- testing device
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- 239000002689 soil Substances 0.000 title claims abstract description 52
- 238000012360 testing method Methods 0.000 title claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 239000011148 porous material Substances 0.000 claims abstract description 19
- 230000003068 static effect Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model provides a reusable water and soil pressure testing device, which comprises a central shaft tube, two wing plates, two screwed joints, a soil pressure sensor, a pore water pressure sensor and two sensor data acquisition lines; the wing plates are symmetrically fixed on two sides of the central shaft tube and respectively form a slotted hole; the soil pressure sensor and the pore water pressure sensor are respectively embedded and fixed in the slotted holes of the two wing plates; the sensor data acquisition line penetrates through the middle shaft tube and is respectively connected with the soil pressure sensor and the pore water pressure sensor; and two ends of the middle shaft tube are respectively connected with the threaded joints. The utility model discloses a soil and water pressure test device that can multiplex, accessible static pressure mode buries underground in the soil body, still can extract after once testing is accomplished, marks qualified back and can drop into use once more.
Description
Technical Field
The utility model relates to a geotechnical engineering tests technical field, especially relates to a multiplexing soil and water pressure test device.
Background
The change of soil stress is an important index for analyzing the state of the soil and the safety and stability of corresponding building structures, and the soil stress is generally obtained by burying a soil pressure gauge and a pore water pressure gauge in the soil and adopting a certain testing means.
At present, the soil pressure gauge and the pore water pressure gauge are usually embedded by a drilling method, wherein a drill hole with a certain diameter is drilled at a set position, and then the soil pressure gauge or the pore water pressure gauge is embedded into a soil layer to be detected through a special bracket. However, the drilling embedding method has the problems of high embedding cost, serious damage to soil around the sensor, slurry pollution, non-recyclability and the like. Thus, innovative needs for reusable sensors and embedding methods have become more stringent.
Disclosure of Invention
To the not enough among the above-mentioned prior art, the utility model provides a soil and water pressure test device that can multiplex, accessible static pressure mode buries underground in the soil body, still can extract after once testing is accomplished, marks qualified back and can drop into operation once more.
In order to achieve the above object, the utility model provides a reusable water and soil pressure testing device, which comprises a central axis tube, two wing plates, two screwed joints, a soil pressure sensor, a pore water pressure sensor and two sensor data acquisition lines; the wing plates are symmetrically fixed on two sides of the central shaft tube and respectively form a slotted hole; the soil pressure sensor and the pore water pressure sensor are respectively embedded and fixed in the slotted holes of the two wing plates; the sensor data acquisition line penetrates through the middle shaft tube and is respectively connected with the soil pressure sensor and the pore water pressure sensor; and two ends of the middle shaft tube are respectively connected with the threaded joints.
Preferably, the wing plates are trapezoidal, and the longer one of two parallel sides of the wing plates is connected with the central shaft tube.
Preferably, the edges of the wing plates that are not connected with the bottom bracket tube form a cutting edge with a fixed width.
Preferably, the width of the wing plate ranges from 4cm to 6cm; the thickness of the wing plate is less than or equal to 1cm.
Preferably, the soil pressure sensor and the pore water pressure sensor have the same or close thickness to the wing plate.
The utility model discloses owing to adopted above technical scheme, make it have following beneficial effect:
the utility model discloses compare in traditional device can very big reduction because of the violent disturbance of original state soil the soil body stability period that causes is long, test data receives the big problem of buried quality influence underground to it does not need the mode buried underground of drilling, the pollution problem that the mud that the reduction that can be great buried cost and drilling produced underground brought the environment.
The small-diameter central axis tube is matched with the wing plate with the blade, so that the resistance in the static pressure burying process and the disturbance to the soil body can be greatly reduced, the burying is more convenient, and the testing precision is more guaranteed.
The threaded connector can be connected with the matched hollow compression bar, so that the testing device can be conveniently pressed into a soil body and pulled out along with the compression bar.
The utility model discloses accomplish the back on probation in an item, device and depression bar can extract and recycle, can gain more excellent economic benefits and satisfy the theory of low carbon environmental protection.
Drawings
Fig. 1 is a front view of a reusable soil and water pressure testing device according to an embodiment of the present invention;
fig. 2 is a top view of the reusable water and soil pressure testing device according to the embodiment of the present invention.
Detailed Description
The following description of the preferred embodiments of the present invention will be given with reference to the accompanying drawings, fig. 1 and 2, and will make the functions and features of the present invention better understood.
Referring to fig. 1 and fig. 2, a reusable water and soil pressure testing apparatus according to an embodiment of the present invention includes a central axis tube 1, two wing plates 2, two screwed joints 3, a soil pressure sensor 4, a pore water pressure sensor 5, and two sensor data collecting lines 6; the wing plates 2 are symmetrically fixed on two sides of the central shaft tube 1 and respectively form a slotted hole; the soil pressure sensor 4 and the pore water pressure sensor 5 are respectively embedded and fixed in the slotted holes of the two wing plates 2; the sensor data acquisition line 6 is arranged in the central shaft tube 1 in a penetrating way and is respectively connected with the soil pressure sensor 4 and the pore water pressure sensor 5; two ends of the central shaft tube 1 are respectively connected with a threaded joint 3.
The structure of the central shaft tube 1 is a hollow tube with a certain wall thickness, the diameter of the tank meets the strength requirement of the device in the pressing-in process, the strength requirement is generally not more than 6cm, the material comprises but not limited to high-strength steel and aluminum alloy materials, and the wall thickness needs to be capable of resisting the pressure of the testing device pressed into a corresponding soil layer.
In this embodiment, the wing plate 2 is trapezoidal, and the longer side of two parallel sides of the wing plate 2 is connected to the central shaft tube 1. The edges of the wing plates 2 which are not connected with the central shaft tube 1 form edge feet with fixed width. The width range of the wing plate 2 is 4 cm-6 cm; the thickness of the wing plate 2 is less than or equal to 1cm. And the wing plate 2 is a high-strength trapezoidal plate with a certain thickness and is made of the same material as the central shaft tube 1. The cutting edge can reduce the resistance of the testing device in soil.
Two ends of the central shaft tube 1 are respectively provided with a threaded joint 3 which can be connected with a matched hollow compression bar, so that the testing device can be conveniently pressed into a soil body along with the compression bar.
The thickness of the soil pressure sensor 4 and the pore water pressure sensor 5 is the same as or close to that of the wing plate 2. Sensor types include, but are not limited to, resistance strain, fiber optic, vibrating wire, etc.
The sensor data acquisition line 6 penetrates out of the middle shaft tube 1 through the wing plate 2, and the sensor data acquisition line 6 is connected with matched acquisition equipment, so that accurate data acquisition can be realized.
The utility model discloses soil and water pressure test device that can multiplex, its application method is as follows:
the first step, the quantity of the testing devices and the sensors, the embedding depth of the sensors, the measuring range of the sensors, the length of the acquisition line and the like are determined according to the testing requirements, the sensors meet the qualified requirements when being delivered from a factory, necessary inspection is carried out again before use, and the testing device with the pore water pressure sensor 5 is soaked in water and saturated.
And secondly, determining the specific position of the hole site to be detected by adopting positioning or ranging tools such as RTK (real-time kinematic) and a range finder, and clearly marking.
And thirdly, moving the static pressure equipment above the hole site to be measured, centering the axis of the static pressure equipment with the hole site, and if the earth surface has a crust layer or the shallow part is complicated to fill with miscellaneous earth, firstly opening holes and leading holes.
And fourthly, placing corresponding testing devices and a corresponding number of pressure rods on the ground in sequence according to the quantity and the depth of the soil and water pressure to be tested, passing the sensor data acquisition lines 6 of all the testing devices through inner pipes of the pressure rods in sequence, reading the initial values of all the sensors by adopting acquisition equipment, and recording.
And fifthly, connecting the testing device at the lowest end with a pressure lever, installing the testing device on a static pressure device, starting the static pressure device, pressing the static pressure device to the soil body, and then sequentially installing the pressure lever and the testing devices until all the testing devices are pressed into the soil layer with the set depth.
And sixthly, removing the static pressure equipment, arranging the sensor data acquisition lines 6, and reading the readings of the sensors after being pressed in by using the acquisition equipment.
And seventhly, protecting the test holes and the sensor data acquisition lines 6 according to field conditions, installing a test hole protective cover if necessary, and accessing the sensor data acquisition lines 6 into an automatic acquisition box in a concealed and buried mode.
The present invention has been described in detail with reference to the embodiments shown in the drawings, and those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details of the embodiments should not be construed as limitations of the invention, which are intended to be covered by the following claims.
Claims (5)
1. A reusable water and soil pressure testing device is characterized by comprising a central shaft tube, two wing plates, two screwed joints, a soil pressure sensor, a pore water pressure sensor and two sensor data acquisition lines; the wing plates are symmetrically fixed on two sides of the central shaft tube and respectively form a slotted hole; the soil pressure sensor and the pore water pressure sensor are respectively embedded and fixed in the slotted holes of the two wing plates; the sensor data acquisition line penetrates through the middle shaft tube and is respectively connected with the soil pressure sensor and the pore water pressure sensor; and two ends of the middle shaft tube are respectively connected with the threaded joints.
2. The reusable water and soil pressure testing device as recited in claim 1, wherein the wing plate is trapezoidal, and the longer of the two parallel sides of the wing plate is connected to the bottom bracket tube.
3. The reusable water and soil pressure testing device as recited in claim 2, wherein the sides of the wings not connected to the bottom bracket tube form a blade leg of a fixed width.
4. The reusable water and soil pressure testing device as claimed in claim 3, wherein the width of the wing plate ranges from 4cm to 6cm; the thickness of the wing plate is less than or equal to 1cm.
5. The reusable water and soil pressure testing device of claim 1, wherein the soil pressure sensor and the pore water pressure sensor are the same or close to the thickness of the wing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221937902.4U CN217758670U (en) | 2022-07-25 | 2022-07-25 | Reusable water and soil pressure testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221937902.4U CN217758670U (en) | 2022-07-25 | 2022-07-25 | Reusable water and soil pressure testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217758670U true CN217758670U (en) | 2022-11-08 |
Family
ID=83876776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221937902.4U Active CN217758670U (en) | 2022-07-25 | 2022-07-25 | Reusable water and soil pressure testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217758670U (en) |
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2022
- 2022-07-25 CN CN202221937902.4U patent/CN217758670U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 200093 No. 38 Shui Feng Road, Yangpu District, Shanghai. Patentee after: Shanghai Survey, Design and Research Institute (Group) Co.,Ltd. Address before: 200093 No. 38 Shui Feng Road, Yangpu District, Shanghai. Patentee before: SGIDI ENGINEERING CONSULTING (Group) Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |